This document summarizes an experimental analysis of the thermal performance of a muffler guard for a Hero XTREME 200R motorcycle. The study designs and models a basic and modified muffler guard using CAD software. Temperature measurements are taken at points on the basic and modified guards under idling and running engine conditions using an infrared thermometer. Graphs of the temperature data show the modified guard with vertical and horizontal holes cut into the big end reduced temperatures compared to the basic guard design. The modifications aim to improve heat transfer and lower muffler guard temperatures for enhanced performance and component life.
IRJET- Review on An Innovative Approach to Study the Thermal Performance of M...IRJET Journal
This document reviews thermal performance analysis of a muffler heat shield for the Hero Xtreme 200R motorcycle. It discusses how heat shields protect components from high exhaust temperatures through conduction, convection, and radiation. The authors conducted computational fluid dynamics (CFD) analysis using ANSYS to optimize the design of the muffler heat shield. Their results showed the optimized design could reduce pressure drop in the exhaust system by up to 13% through minor design changes to the perforated pipe. The document also provides background on heat shield applications in automotive exhaust systems and prior studies analyzing thermal behavior and heat transfer in exhaust components.
IRJET- Experimental Analysis of Circular Perforated Fin Arrays by Forced Conv...IRJET Journal
This document summarizes an experimental analysis of heat transfer from circular perforated fin arrays under forced convection using a wind tunnel. Trapezoidal microfin arrays with circular perforations were selected and designed using Taguchi Method. Experiments were conducted in a wind tunnel on three test specimens - a solid rectangular fin array and two trapezoidal perforated fin arrays with different perforation pitches. The perforated fin arrays showed higher overall efficiency and effectiveness compared to the solid fin array. Maximum overall efficiency was obtained for the array with 5mm perforation pitch at an air velocity of 2m/s and heat input of 150W. Optimum effectiveness was obtained for the array with 7mm pitch at 2m/s and 120W input
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
IRJET- Design and Fabrication of Thermo Acoustic RefrigeratorIRJET Journal
This document describes the design and fabrication of a thermoacoustic refrigerator. Some key points:
1. Thermoacoustic refrigeration uses sound waves to alternately compress and relax gas particles in a tube, transferring heat without moving parts.
2. The refrigerator consists of a resonator tube containing a stack of closely spaced surfaces through which a sound wave oscillates. Heat is transferred between the gas and stack surfaces.
3. Experiments investigated different stack geometries and materials to optimize heat transfer and the refrigerator's performance. Temperature sensors measured the temperature difference created.
This document presents a sequential coupled thermal-structural analysis of an aftermarket exhaust manifold made of SUS 441L stainless steel. A finite element model of the exhaust manifold was created in ANSYS Workbench 15.0 to simulate the temperature distribution and related thermal stresses and deformations under operating conditions. The thermal analysis calculated temperatures ranging from 150°C at the engine interface to 38°C at outer surfaces. These temperature results were mapped to a structural analysis to determine stresses, strains, and deformations induced by thermal expansion. The analysis aimed to ensure the material and design were appropriate to withstand operating stresses and temperatures.
Heat Transfer Analysis and Optimization of Engine Cylinder Fins of Varying Ge...IOSR Journals
: The main aim of the project is to analyze the thermal properties by varying geometry, material and
thickness of cylinder fins. Parametric models of cylinder with fins have been developed to predict the transient
thermal behavior. The models are created by varying the geometry, rectangular, circular and curved shaped
fins and also by varying thickness of the fins. The 3D modeling software used is Pro/Engineer.The analysis is
done using ANSYS. Presently Material used for manufacturing cylinder fin body is Aluminum Alloy 204 which
has thermal conductivity of 110-150W/mk. We are analyzing the cylinder fins using this material and also using
Aluminum alloy 6061 and Magnesium alloy which have higher thermal conductivities.
Analyze the thermal properties by varying geometry material and thickness of ...IAEME Publication
The document summarizes research from multiple papers on analyzing the thermal properties of engine cylinder fins by varying the fin geometry, material, and thickness. The key points are:
1) A model of cylinder fins was created in ProEngineer and analyzed in ANSYS to determine temperatures, heat flux, and thermal gradients.
2) Simulations were run for rectangular fins made of materials like magnesium, aluminum alloys, and beryllium at thicknesses of 3mm and 2.5mm.
3) The simulations showed that reducing fin thickness from 3mm to 2.5mm increased heat transfer rates, with maximum rates reaching over 20W/mm2 for some materials.
A Survey On Heat Transfer Of Air Cooled Internal Combustion Engine Various Fi...IRJET Journal
1) The document discusses heat transfer in air-cooled internal combustion engines. It focuses on improving heat transfer rates through the cooling fins on cylinder blocks.
2) Various fin geometries and materials have been studied through experiments and computational fluid dynamics simulations. Triangular, elliptical, and perforated fins have shown improvements over traditional rectangular fins.
3) Key factors that affect heat transfer include fin geometry, number of fins, fin pitch, material properties, ambient conditions, and airflow velocity. Optimizing these parameters can enhance an engine's cooling ability while reducing overall weight.
IRJET- Review on An Innovative Approach to Study the Thermal Performance of M...IRJET Journal
This document reviews thermal performance analysis of a muffler heat shield for the Hero Xtreme 200R motorcycle. It discusses how heat shields protect components from high exhaust temperatures through conduction, convection, and radiation. The authors conducted computational fluid dynamics (CFD) analysis using ANSYS to optimize the design of the muffler heat shield. Their results showed the optimized design could reduce pressure drop in the exhaust system by up to 13% through minor design changes to the perforated pipe. The document also provides background on heat shield applications in automotive exhaust systems and prior studies analyzing thermal behavior and heat transfer in exhaust components.
IRJET- Experimental Analysis of Circular Perforated Fin Arrays by Forced Conv...IRJET Journal
This document summarizes an experimental analysis of heat transfer from circular perforated fin arrays under forced convection using a wind tunnel. Trapezoidal microfin arrays with circular perforations were selected and designed using Taguchi Method. Experiments were conducted in a wind tunnel on three test specimens - a solid rectangular fin array and two trapezoidal perforated fin arrays with different perforation pitches. The perforated fin arrays showed higher overall efficiency and effectiveness compared to the solid fin array. Maximum overall efficiency was obtained for the array with 5mm perforation pitch at an air velocity of 2m/s and heat input of 150W. Optimum effectiveness was obtained for the array with 7mm pitch at 2m/s and 120W input
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
IRJET- Design and Fabrication of Thermo Acoustic RefrigeratorIRJET Journal
This document describes the design and fabrication of a thermoacoustic refrigerator. Some key points:
1. Thermoacoustic refrigeration uses sound waves to alternately compress and relax gas particles in a tube, transferring heat without moving parts.
2. The refrigerator consists of a resonator tube containing a stack of closely spaced surfaces through which a sound wave oscillates. Heat is transferred between the gas and stack surfaces.
3. Experiments investigated different stack geometries and materials to optimize heat transfer and the refrigerator's performance. Temperature sensors measured the temperature difference created.
This document presents a sequential coupled thermal-structural analysis of an aftermarket exhaust manifold made of SUS 441L stainless steel. A finite element model of the exhaust manifold was created in ANSYS Workbench 15.0 to simulate the temperature distribution and related thermal stresses and deformations under operating conditions. The thermal analysis calculated temperatures ranging from 150°C at the engine interface to 38°C at outer surfaces. These temperature results were mapped to a structural analysis to determine stresses, strains, and deformations induced by thermal expansion. The analysis aimed to ensure the material and design were appropriate to withstand operating stresses and temperatures.
Heat Transfer Analysis and Optimization of Engine Cylinder Fins of Varying Ge...IOSR Journals
: The main aim of the project is to analyze the thermal properties by varying geometry, material and
thickness of cylinder fins. Parametric models of cylinder with fins have been developed to predict the transient
thermal behavior. The models are created by varying the geometry, rectangular, circular and curved shaped
fins and also by varying thickness of the fins. The 3D modeling software used is Pro/Engineer.The analysis is
done using ANSYS. Presently Material used for manufacturing cylinder fin body is Aluminum Alloy 204 which
has thermal conductivity of 110-150W/mk. We are analyzing the cylinder fins using this material and also using
Aluminum alloy 6061 and Magnesium alloy which have higher thermal conductivities.
Analyze the thermal properties by varying geometry material and thickness of ...IAEME Publication
The document summarizes research from multiple papers on analyzing the thermal properties of engine cylinder fins by varying the fin geometry, material, and thickness. The key points are:
1) A model of cylinder fins was created in ProEngineer and analyzed in ANSYS to determine temperatures, heat flux, and thermal gradients.
2) Simulations were run for rectangular fins made of materials like magnesium, aluminum alloys, and beryllium at thicknesses of 3mm and 2.5mm.
3) The simulations showed that reducing fin thickness from 3mm to 2.5mm increased heat transfer rates, with maximum rates reaching over 20W/mm2 for some materials.
A Survey On Heat Transfer Of Air Cooled Internal Combustion Engine Various Fi...IRJET Journal
1) The document discusses heat transfer in air-cooled internal combustion engines. It focuses on improving heat transfer rates through the cooling fins on cylinder blocks.
2) Various fin geometries and materials have been studied through experiments and computational fluid dynamics simulations. Triangular, elliptical, and perforated fins have shown improvements over traditional rectangular fins.
3) Key factors that affect heat transfer include fin geometry, number of fins, fin pitch, material properties, ambient conditions, and airflow velocity. Optimizing these parameters can enhance an engine's cooling ability while reducing overall weight.
Experimental investigation on the effect of fin pitch on the performance of p...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
THERMAL ANALYSIS OF A HEAT SINK FOR ELECTRONICS COOLINGIAEME Publication
Heat transfer is a discipline of thermal engineering that concern the generation, use, conversion and exchange of thermal energy, heat between physical systems. Heat transfer is classified in to various mechanisms such as heat conduction, convection, thermal radiation & transfer of energy by phase change. Most of the electronic equipment are low power and produce negligible amount of heat in their operation. Some devices, such as power transistors, CPU's, & power diodes produce a significant amount of heat. so sufficient measures are need to be taken so as to prolong their working life and reliability.
IRJET- Analysis of Engine Fin Body by Varying Geometry & MaterialsIRJET Journal
This document analyzes the thermal properties of fins on an engine cylinder by varying the fin geometry and materials. It discusses modeling cylinder fins with different geometries like rectangular, circular, and triangular in SOLID EDGE and analyzing them in ANSYS Workbench. The analysis shows that triangular fins made of aluminum alloy 6082 have the lowest temperature and highest heat transfer rate compared to other geometries and materials. The document concludes that fins with extensions provide more effective heat transfer than fins without extensions, with rectangular extensions providing the best performance. It recommends triangular fins made of aluminum alloy 6082 as the optimal design based on the thermal analysis.
Review Paper on Experimental Analysis of Vortex TubeIRJET Journal
The document summarizes research on the experimental analysis of vortex tubes. It discusses several studies that examined how the geometric parameters and operating conditions of vortex tubes, such as nozzle diameter, tube length, inlet pressure, and cold fraction, influence the temperature separation and energy separation efficiency. Computational fluid dynamics (CFD) models are used to study the internal flow phenomena and energy separation mechanisms. The studies found that there is an optimal tube length and nozzle diameter that maximize energy separation. Increasing the inlet pressure or decreasing the cold fraction also increases the temperature difference between the cold and hot outlets.
IRJET- Thermal Analysis and Management for an Autonomous Underwater VehicleIRJET Journal
This document discusses thermal analysis and management for an autonomous underwater vehicle (AUV). It begins by introducing AUVs and the heat generated by their electrical, electronic, mechanical and mechatronic systems operating inside the enclosed pressure hull. It then estimates the heat loads on the AUV through theoretical, numerical and experimental analysis to understand temperature variation over time. Various thermal management techniques are discussed, including active cooling with fans/liquid and passive cooling with heat sinks, heat pipes and phase change materials (PCMs). PCM-based thermal management is proposed to absorb heat during phase changes and prevent battery temperature from rising too fast inside the enclosed hull.
IRJET- Design and Fabrication of Solar Air Heater to Increase Heat Transfer R...IRJET Journal
This document describes a study on enhancing heat transfer in solar air heaters through the use of artificial surface roughness. An experimental solar air heater was fabricated with an absorber plate containing V-shaped, discrete fins as artificial roughness. Temperature and pressure measurements were taken at various points along the air flow path through the heater over multiple days. The results showed an increase in heat transfer coefficient of 15-35% compared to a smooth surface, demonstrating that artificial roughness is an effective way to improve solar air heater performance.
IRJET-Performance Analysis of Solar Air Heater with Different Absorber Materi...IRJET Journal
1) The document compares the performance of two types of solar air heaters - one with a toughened glass absorber plate and the other with a GI (galvanized iron) absorber plate.
2) Experimental results showed that the efficiency of the solar air heater with the toughened glass plate was higher than the one with the GI plate. The air temperature achieved was also higher with the toughened glass plate.
3) Efficiency increased with higher air velocities for both types of heaters but the toughened glass plate design performed better overall according to the analysis.
IRJET - Experimental Investigation of Heat Transfer through Rectangular and ...IRJET Journal
1. The document experimentally investigates heat transfer through rectangular and trapezoidal fins made of aluminum 6063 alloy with variable cross-sections. Rectangular fins measuring 110x50x10mm and trapezoidal fins measuring 110x30x10mm were fabricated and their heat transfer coefficients were measured under different heat input conditions.
2. Several studies on heat transfer through different fin geometries are reviewed. One study found that sideward vertically oriented trapezoidal fins performed best for natural convection cooling. Another study computationally analyzed heat transfer from vertical trapezoidal and rectangular fins and found trapezoidal fins performed better.
3. The document aims to compare heat transfer through rectangular, trapezoidal and parabolic
The present trend in the electronic packaging industry is to reduce the size and increase the performance of the equipment. As the power of these systems increases and the volume allowed diminishes, heat flux or density is spiraled. The cooling of modern electronic components is one of the prime areas for the application of thermal control techniques. Of the many thermal-cooling techniques, forced air-cooling being one such extensively used technique due to its simple design and easy availability of air. The present study is to design an air cooled high power electronic system to dissipate heat from selected electronic components.
Theoretical investigations on standing wave thermoacoustic prime mover using ...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IRJET- Experimental Analysis to Investigate the Thermal Performance of differ...IRJET Journal
The document presents an experimental analysis of the thermal performance of different fin geometries. Rectangular, circular, and trapezoidal aluminum fins were experimentally tested under steady-state conditions. Thermocouples were used to measure the temperature at different points on the fins heated by a 200-watt light bulb. The results showed that triangular fins had the most uniform temperature distribution and highest heat transfer rate, making them the most efficient geometry tested. The study provides conclusions on the thermal performance of different fin geometries and suggests areas for further optimization and applications of fin geometry research.
Experimental Analysis and Investigation for Thermal Behaviour of Ventilated D...ijsrd.com
In the present review, we discuss works that have been published in the last 15 – 20 years that are based on the computational and experimental analysis of thermal properties of disc brake rotor of various types; new applications of the theory of heat conduction, convection and radiation. As the rapid development of computer engineering have led to a considerable increase in the number of solvable problems, and the refining of mathematical methods and approaches enables one to construct analytic solutions of these problems. In the paper, we outline the main directions of investigation of the processes of interaction of bodies with regard for heat release. We describe computational methods in more detail as compared with other approaches, because, to our mind, they are very promising for deriving simple engineering relations for braking processes on the basis of the equations of the thermal dynamics of friction; also the actual braking system is much transient and a lot of variable changes at a time which becomes very difficult to calculate experimentally.
This document reviews various techniques for enhancing heat transfer through surfaces like tubes and ducts, specifically the use of ribs, fins, and inserts. It begins by classifying heat transfer enhancement techniques as active, passive, or compound. The majority of the document then focuses on passive techniques, including extended surfaces like fins and the use of inserts within ducts or tubes. It provides examples of different rib, fin, and insert configurations that have been used, and summarizes several studies that have experimentally analyzed heat transfer rates and pressure drops associated with these configurations under different parameters. Overall, the document serves as a literature review of using ribs, fins, and inserts to enhance heat transfer through surfaces in a passive manner without external power input.
The main objectives of the heat transfer analysis is to enhance the heat transfer rate from system to
surrounding. To transfer the heat from any system either by conduction or convection medium. Both modes of
heat transfer has been enhanced by providing an additional equipments in the outer periphery of the heat transfer
system.Fins are basically mechanical structures which are used to cool various structures by the process of
convection. Most part of their design is basically limited by the design of the system. But still certain parameters
and geometry could be modified to better heat transfer. In most of the cases simple fin geometry is preferred such
as rectangular fins and circular fins. Many experimental works has been done to improve the heat release of the
internal combustion engine cylinder and improves fin efficiency.This study presents the results of air flow and
heat transfer in a light weight automobile engine, considering fins with dimple to increase the heat transfer rate.
An analysis has been using ANSYS WORKBENCH version 12.0 was conducted to find the optimum number of
dimples to maximizing the heat transfer across the Automobile engine body. The results indicate that the
presence of fins with dimple shows improved results on the basis of heat transfer.
This document describes a finite element analysis simulation of thermal and mechanical stresses on a piston from a marine diesel engine. The piston model was developed in SolidWorks and imported into ANSYS for simulation. Boundary conditions including combustion pressure, temperature-dependent material properties, and heat transfer coefficients were applied. The results found that the highest stress was the coupled thermal-mechanical stress, which was below the material yield stress even at elevated temperatures, indicating the piston design would withstand operating stresses. The analysis provides useful information for piston design optimization.
Recent advances in semiconductor technology show the improvement of fabrication on
electronics appliances in terms of performance, power density and even the size. This great achievement
however led to some major problems on thermal and heat distribution of the electronic devices. This
thermal problem could reduce the efficiency and reliability of the electronic devices. In order to minimize
this thermal problem, an optimal cooling techniques need to be applied during the operation. There are
various cooling techniques have been used and one of them is passive pin fin heat sink approach. This
paper focuses on inline pin fin heat sink, which use copper material with different shapes of pin fin and a
constant 5.5W heat sources. The simulation model has been formulated using COMSOL Multiphysics
software to stimulate the pin fin design, study the thermal distribution and the maximum heat profile.
Conjugate Heat transfer Analysis of helical fins with airfoil cross-section a...IJERA Editor
Air Cooled Engines have been used in a variety of applications, ranging from airplanes to motorbikes and even stationary or portable engines. Since modern automobiles and airplanes use engines delivering more power, they have to be cooled more efficiently due to which a more complex water cooling system is used for cooling engines with large displacements. Hence air cooling is becoming a thing of the past, especially in the aviation sector due to the advent of more efficient gas turbine engines. However air cooled internal combustion engines are still being used in a wide variety of two-wheelers ranging from small single cylinder engines to heavy duty liter class V-twins and Inline fours, due to the non-practicalities associated with the installment of a bulky water cooling system in two-wheelers. So one can ascertain that there is a scope for improving the efficiency of air cooled engines even further. The objective of this paper is to analyze currently existing fin design employed in most of the air cooled engines and improve it by changing the cross-section to a streamlined one and also making the fins in a helical orientation as opposed to the regular circular fins employed. Our analysis comprises of a computational fluid dynamics study of both the fin models with identical dimensions and simulated in the same environment using ANSYS FLUENT 15 software and we attempt to compare their performance using the temperature and heat transfer coefficient distribution plots obtained.
Study of Thermoelectric Air Conditioning for AutomobilesIRJET Journal
This document discusses the study of using thermoelectric air conditioning for automobiles as an alternative to traditional HVAC systems. It begins by introducing thermoelectric modules, which can act as heat pumps using the Peltier effect to produce a temperature difference when current flows through them. Unlike traditional HVAC systems, thermoelectric air conditioning does not require compressors or pumps. The document then discusses the methodology, working principles based on the Peltier and Seebeck effects, configuration of thermoelectric modules, and aims to introduce a new HVAC system using thermoelectric modules to overcome disadvantages of existing systems such as environmental impact, energy efficiency, and cost.
IRJET- Analysis of Heat Transfer in Engine Cylinder Fins for Varying Geometry...IRJET Journal
This document analyzes heat transfer in engine cylinder fins by varying the fin geometry and material. Finite element analysis is conducted using ANSYS on cylinder fins with circular and triangular cross-sections made of three aluminum alloys. The analysis determines the temperature distribution and heat flux in the fins under various operating conditions. The results show that triangular fins and fins made with alloy C443 having the highest thermal conductivity provide the best heat transfer performance.
THERMAL AND STRUCTURAL ANALYSIS OF AN EXHAUST MANIFOLD OF A MULTI CYLINDER EN...IAEME Publication
This document describes a thermal and structural analysis of an exhaust manifold for a multi-cylinder engine. A 3D model of the exhaust manifold was created in NX CAD software. Thermal analysis was performed to determine the temperature distribution, and coupled field analysis was conducted to calculate deflections and stresses under pressure and thermal loads. Modal analysis identified six natural frequencies between 0-1500Hz and their corresponding mode shapes. Harmonic analysis generated displacement-frequency graphs and calculated peak deflections and stresses at resonance frequencies. The analyses showed a maximum deflection of 0.1mm and Von Mises stress of 115MPa, below the yield strength, confirming the design can withstand operating loads.
Thermal Study of Fins In Light Weighted Automobile VehiclesIRJET Journal
This document discusses the thermal study and design of fins on an automobile engine cylinder to maximize cooling. It begins by explaining that internal combustion engines are typically only around 50% efficient, with the remaining energy lost as heat. Fins are extended surfaces attached to the engine that increase surface area and facilitate convection to transfer this waste heat to the environment. The document then analyzes different fin designs and materials, provides empirical specifications for a Honda motorcycle engine studied through computational fluid dynamics (CFD) modeling, derives the governing fin heat transfer equation, and discusses mechanisms of convective heat transfer. It concludes that optimizing fin design can maximize engine cooling and efficiency based on parameters like heat transfer coefficients and material properties.
IRJET- Performance Analysis of IC Engine with Introduction of HTC MaterialIRJET Journal
This document discusses coating engine components with highly thermal conducting (HTC) materials to improve heat transfer and reduce operating temperatures. It analyzes coating the exhaust valve, inlet valve, cylinder head, and valve seats with sintered copper. Thermal analysis using FEM software shows coating can reduce maximum temperatures from 451°C to 373°C on the valve and 435°C on the valve seat. This allows engines to operate at higher RPMs within safe temperature ranges and reduces harmful emissions produced at high temperatures. The document concludes coating high heat areas improves heat transfer and dissipation, enhancing engine performance and efficiency.
Experimental investigation on the effect of fin pitch on the performance of p...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
THERMAL ANALYSIS OF A HEAT SINK FOR ELECTRONICS COOLINGIAEME Publication
Heat transfer is a discipline of thermal engineering that concern the generation, use, conversion and exchange of thermal energy, heat between physical systems. Heat transfer is classified in to various mechanisms such as heat conduction, convection, thermal radiation & transfer of energy by phase change. Most of the electronic equipment are low power and produce negligible amount of heat in their operation. Some devices, such as power transistors, CPU's, & power diodes produce a significant amount of heat. so sufficient measures are need to be taken so as to prolong their working life and reliability.
IRJET- Analysis of Engine Fin Body by Varying Geometry & MaterialsIRJET Journal
This document analyzes the thermal properties of fins on an engine cylinder by varying the fin geometry and materials. It discusses modeling cylinder fins with different geometries like rectangular, circular, and triangular in SOLID EDGE and analyzing them in ANSYS Workbench. The analysis shows that triangular fins made of aluminum alloy 6082 have the lowest temperature and highest heat transfer rate compared to other geometries and materials. The document concludes that fins with extensions provide more effective heat transfer than fins without extensions, with rectangular extensions providing the best performance. It recommends triangular fins made of aluminum alloy 6082 as the optimal design based on the thermal analysis.
Review Paper on Experimental Analysis of Vortex TubeIRJET Journal
The document summarizes research on the experimental analysis of vortex tubes. It discusses several studies that examined how the geometric parameters and operating conditions of vortex tubes, such as nozzle diameter, tube length, inlet pressure, and cold fraction, influence the temperature separation and energy separation efficiency. Computational fluid dynamics (CFD) models are used to study the internal flow phenomena and energy separation mechanisms. The studies found that there is an optimal tube length and nozzle diameter that maximize energy separation. Increasing the inlet pressure or decreasing the cold fraction also increases the temperature difference between the cold and hot outlets.
IRJET- Thermal Analysis and Management for an Autonomous Underwater VehicleIRJET Journal
This document discusses thermal analysis and management for an autonomous underwater vehicle (AUV). It begins by introducing AUVs and the heat generated by their electrical, electronic, mechanical and mechatronic systems operating inside the enclosed pressure hull. It then estimates the heat loads on the AUV through theoretical, numerical and experimental analysis to understand temperature variation over time. Various thermal management techniques are discussed, including active cooling with fans/liquid and passive cooling with heat sinks, heat pipes and phase change materials (PCMs). PCM-based thermal management is proposed to absorb heat during phase changes and prevent battery temperature from rising too fast inside the enclosed hull.
IRJET- Design and Fabrication of Solar Air Heater to Increase Heat Transfer R...IRJET Journal
This document describes a study on enhancing heat transfer in solar air heaters through the use of artificial surface roughness. An experimental solar air heater was fabricated with an absorber plate containing V-shaped, discrete fins as artificial roughness. Temperature and pressure measurements were taken at various points along the air flow path through the heater over multiple days. The results showed an increase in heat transfer coefficient of 15-35% compared to a smooth surface, demonstrating that artificial roughness is an effective way to improve solar air heater performance.
IRJET-Performance Analysis of Solar Air Heater with Different Absorber Materi...IRJET Journal
1) The document compares the performance of two types of solar air heaters - one with a toughened glass absorber plate and the other with a GI (galvanized iron) absorber plate.
2) Experimental results showed that the efficiency of the solar air heater with the toughened glass plate was higher than the one with the GI plate. The air temperature achieved was also higher with the toughened glass plate.
3) Efficiency increased with higher air velocities for both types of heaters but the toughened glass plate design performed better overall according to the analysis.
IRJET - Experimental Investigation of Heat Transfer through Rectangular and ...IRJET Journal
1. The document experimentally investigates heat transfer through rectangular and trapezoidal fins made of aluminum 6063 alloy with variable cross-sections. Rectangular fins measuring 110x50x10mm and trapezoidal fins measuring 110x30x10mm were fabricated and their heat transfer coefficients were measured under different heat input conditions.
2. Several studies on heat transfer through different fin geometries are reviewed. One study found that sideward vertically oriented trapezoidal fins performed best for natural convection cooling. Another study computationally analyzed heat transfer from vertical trapezoidal and rectangular fins and found trapezoidal fins performed better.
3. The document aims to compare heat transfer through rectangular, trapezoidal and parabolic
The present trend in the electronic packaging industry is to reduce the size and increase the performance of the equipment. As the power of these systems increases and the volume allowed diminishes, heat flux or density is spiraled. The cooling of modern electronic components is one of the prime areas for the application of thermal control techniques. Of the many thermal-cooling techniques, forced air-cooling being one such extensively used technique due to its simple design and easy availability of air. The present study is to design an air cooled high power electronic system to dissipate heat from selected electronic components.
Theoretical investigations on standing wave thermoacoustic prime mover using ...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IRJET- Experimental Analysis to Investigate the Thermal Performance of differ...IRJET Journal
The document presents an experimental analysis of the thermal performance of different fin geometries. Rectangular, circular, and trapezoidal aluminum fins were experimentally tested under steady-state conditions. Thermocouples were used to measure the temperature at different points on the fins heated by a 200-watt light bulb. The results showed that triangular fins had the most uniform temperature distribution and highest heat transfer rate, making them the most efficient geometry tested. The study provides conclusions on the thermal performance of different fin geometries and suggests areas for further optimization and applications of fin geometry research.
Experimental Analysis and Investigation for Thermal Behaviour of Ventilated D...ijsrd.com
In the present review, we discuss works that have been published in the last 15 – 20 years that are based on the computational and experimental analysis of thermal properties of disc brake rotor of various types; new applications of the theory of heat conduction, convection and radiation. As the rapid development of computer engineering have led to a considerable increase in the number of solvable problems, and the refining of mathematical methods and approaches enables one to construct analytic solutions of these problems. In the paper, we outline the main directions of investigation of the processes of interaction of bodies with regard for heat release. We describe computational methods in more detail as compared with other approaches, because, to our mind, they are very promising for deriving simple engineering relations for braking processes on the basis of the equations of the thermal dynamics of friction; also the actual braking system is much transient and a lot of variable changes at a time which becomes very difficult to calculate experimentally.
This document reviews various techniques for enhancing heat transfer through surfaces like tubes and ducts, specifically the use of ribs, fins, and inserts. It begins by classifying heat transfer enhancement techniques as active, passive, or compound. The majority of the document then focuses on passive techniques, including extended surfaces like fins and the use of inserts within ducts or tubes. It provides examples of different rib, fin, and insert configurations that have been used, and summarizes several studies that have experimentally analyzed heat transfer rates and pressure drops associated with these configurations under different parameters. Overall, the document serves as a literature review of using ribs, fins, and inserts to enhance heat transfer through surfaces in a passive manner without external power input.
The main objectives of the heat transfer analysis is to enhance the heat transfer rate from system to
surrounding. To transfer the heat from any system either by conduction or convection medium. Both modes of
heat transfer has been enhanced by providing an additional equipments in the outer periphery of the heat transfer
system.Fins are basically mechanical structures which are used to cool various structures by the process of
convection. Most part of their design is basically limited by the design of the system. But still certain parameters
and geometry could be modified to better heat transfer. In most of the cases simple fin geometry is preferred such
as rectangular fins and circular fins. Many experimental works has been done to improve the heat release of the
internal combustion engine cylinder and improves fin efficiency.This study presents the results of air flow and
heat transfer in a light weight automobile engine, considering fins with dimple to increase the heat transfer rate.
An analysis has been using ANSYS WORKBENCH version 12.0 was conducted to find the optimum number of
dimples to maximizing the heat transfer across the Automobile engine body. The results indicate that the
presence of fins with dimple shows improved results on the basis of heat transfer.
This document describes a finite element analysis simulation of thermal and mechanical stresses on a piston from a marine diesel engine. The piston model was developed in SolidWorks and imported into ANSYS for simulation. Boundary conditions including combustion pressure, temperature-dependent material properties, and heat transfer coefficients were applied. The results found that the highest stress was the coupled thermal-mechanical stress, which was below the material yield stress even at elevated temperatures, indicating the piston design would withstand operating stresses. The analysis provides useful information for piston design optimization.
Recent advances in semiconductor technology show the improvement of fabrication on
electronics appliances in terms of performance, power density and even the size. This great achievement
however led to some major problems on thermal and heat distribution of the electronic devices. This
thermal problem could reduce the efficiency and reliability of the electronic devices. In order to minimize
this thermal problem, an optimal cooling techniques need to be applied during the operation. There are
various cooling techniques have been used and one of them is passive pin fin heat sink approach. This
paper focuses on inline pin fin heat sink, which use copper material with different shapes of pin fin and a
constant 5.5W heat sources. The simulation model has been formulated using COMSOL Multiphysics
software to stimulate the pin fin design, study the thermal distribution and the maximum heat profile.
Conjugate Heat transfer Analysis of helical fins with airfoil cross-section a...IJERA Editor
Air Cooled Engines have been used in a variety of applications, ranging from airplanes to motorbikes and even stationary or portable engines. Since modern automobiles and airplanes use engines delivering more power, they have to be cooled more efficiently due to which a more complex water cooling system is used for cooling engines with large displacements. Hence air cooling is becoming a thing of the past, especially in the aviation sector due to the advent of more efficient gas turbine engines. However air cooled internal combustion engines are still being used in a wide variety of two-wheelers ranging from small single cylinder engines to heavy duty liter class V-twins and Inline fours, due to the non-practicalities associated with the installment of a bulky water cooling system in two-wheelers. So one can ascertain that there is a scope for improving the efficiency of air cooled engines even further. The objective of this paper is to analyze currently existing fin design employed in most of the air cooled engines and improve it by changing the cross-section to a streamlined one and also making the fins in a helical orientation as opposed to the regular circular fins employed. Our analysis comprises of a computational fluid dynamics study of both the fin models with identical dimensions and simulated in the same environment using ANSYS FLUENT 15 software and we attempt to compare their performance using the temperature and heat transfer coefficient distribution plots obtained.
Study of Thermoelectric Air Conditioning for AutomobilesIRJET Journal
This document discusses the study of using thermoelectric air conditioning for automobiles as an alternative to traditional HVAC systems. It begins by introducing thermoelectric modules, which can act as heat pumps using the Peltier effect to produce a temperature difference when current flows through them. Unlike traditional HVAC systems, thermoelectric air conditioning does not require compressors or pumps. The document then discusses the methodology, working principles based on the Peltier and Seebeck effects, configuration of thermoelectric modules, and aims to introduce a new HVAC system using thermoelectric modules to overcome disadvantages of existing systems such as environmental impact, energy efficiency, and cost.
IRJET- Analysis of Heat Transfer in Engine Cylinder Fins for Varying Geometry...IRJET Journal
This document analyzes heat transfer in engine cylinder fins by varying the fin geometry and material. Finite element analysis is conducted using ANSYS on cylinder fins with circular and triangular cross-sections made of three aluminum alloys. The analysis determines the temperature distribution and heat flux in the fins under various operating conditions. The results show that triangular fins and fins made with alloy C443 having the highest thermal conductivity provide the best heat transfer performance.
THERMAL AND STRUCTURAL ANALYSIS OF AN EXHAUST MANIFOLD OF A MULTI CYLINDER EN...IAEME Publication
This document describes a thermal and structural analysis of an exhaust manifold for a multi-cylinder engine. A 3D model of the exhaust manifold was created in NX CAD software. Thermal analysis was performed to determine the temperature distribution, and coupled field analysis was conducted to calculate deflections and stresses under pressure and thermal loads. Modal analysis identified six natural frequencies between 0-1500Hz and their corresponding mode shapes. Harmonic analysis generated displacement-frequency graphs and calculated peak deflections and stresses at resonance frequencies. The analyses showed a maximum deflection of 0.1mm and Von Mises stress of 115MPa, below the yield strength, confirming the design can withstand operating loads.
Thermal Study of Fins In Light Weighted Automobile VehiclesIRJET Journal
This document discusses the thermal study and design of fins on an automobile engine cylinder to maximize cooling. It begins by explaining that internal combustion engines are typically only around 50% efficient, with the remaining energy lost as heat. Fins are extended surfaces attached to the engine that increase surface area and facilitate convection to transfer this waste heat to the environment. The document then analyzes different fin designs and materials, provides empirical specifications for a Honda motorcycle engine studied through computational fluid dynamics (CFD) modeling, derives the governing fin heat transfer equation, and discusses mechanisms of convective heat transfer. It concludes that optimizing fin design can maximize engine cooling and efficiency based on parameters like heat transfer coefficients and material properties.
IRJET- Performance Analysis of IC Engine with Introduction of HTC MaterialIRJET Journal
This document discusses coating engine components with highly thermal conducting (HTC) materials to improve heat transfer and reduce operating temperatures. It analyzes coating the exhaust valve, inlet valve, cylinder head, and valve seats with sintered copper. Thermal analysis using FEM software shows coating can reduce maximum temperatures from 451°C to 373°C on the valve and 435°C on the valve seat. This allows engines to operate at higher RPMs within safe temperature ranges and reduces harmful emissions produced at high temperatures. The document concludes coating high heat areas improves heat transfer and dissipation, enhancing engine performance and efficiency.
Effect of artificial roughness on heat transfer and friction factor charIAEME Publication
1) The study examines the effect of adding transverse ribs to the absorber plate of a double pass solar air heater on heat transfer and friction factor characteristics.
2) Maximum heat transfer and friction factor occurred at a relative roughness pitch of 10, with heat transfer enhanced 1.6 times over a smooth plate.
3) Artificial roughness is used to increase turbulence and break the laminar sub-layer on the absorber plate, improving heat transfer and thermal efficiency.
IRJET - Thermo- Structural Analysis of Runner of Exhaust ManifoldIRJET Journal
This document summarizes a thermo-structural analysis of an exhaust manifold runner conducted using finite element analysis software. The analysis compared the behavior of grey cast iron and stainless steel materials. Boundary conditions like exhaust gas temperature and pressure were applied. Stresses and temperatures were highest at joints and edges. Stainless steel had lower maximum stresses than cast iron, but higher minimum temperatures. Stainless steel stresses were below its yield strength. This analysis can help evaluate materials for withstanding the complex thermal and mechanical loads on exhaust manifolds.
- The document discusses the use of finite element analysis to model thermal barrier coatings on diesel engine pistons. Thermal barrier coatings can increase piston performance by reducing surface temperatures.
- The analysis compared coated pistons made of AlSi alloy and steel. It found that coating both materials reduced maximum surface temperatures, by 28% for AlSi and 17% for steel.
- Finite element modeling is useful for virtually prototyping thermal barrier coating systems and analyzing how coating thickness, material properties, stresses, and boundary conditions impact temperature distribution.
Design and Thermal Analysis of Disc Brake for Minimizing TemperatureIRJET Journal
This document describes a study on the design and thermal analysis of disc brakes to minimize temperature. Different shapes and slot designs were modeled for a disc brake rotor using CATIA software and thermal analysis was performed using ANSYS. The results from static structural and transient thermal analysis for the original design and 5 new designs under various loading conditions are presented and compared. The analysis shows that the new design 5 performs the best with maximum stresses and temperature below the original design, indicating improved thermal conductivity and heat dissipation. This optimized design can help improve brake performance and safety.
Effect of different variables on heat transfer rate of four stroke si engine ...IAEME Publication
1. The document reviews research on factors that affect the heat transfer rate of fins on internal combustion engines. Increased fin thickness, larger numbers of fins, and higher fluid velocities can improve heat transfer but may also increase fuel consumption due to overcooling.
2. Material, geometry, perforations and notches, and environmental conditions also impact heat transfer. Copper fins perform better than aluminum but aluminum is more commonly used. Increased turbulence from modifications like perforations and notches can enhance heat transfer.
3. Computational fluid dynamics (CFD) simulations agree with experimental results and can be used to analyze different fin parameters, though overcooling at high velocities still needs to be addressed to reduce fuel consumption. Optimizing
IRJET- Geometrical Optimization of Fins for Effective Heat Transfer using CFD...IRJET Journal
This document discusses geometrical optimization of fins for effective heat transfer using computational fluid dynamics (CFD) analysis. It aims to study the optimization of fin profiles for electronic devices with innovative shapes, particularly analyzing Y-shaped fins. CFD analysis is performed using ANSYS Fluent to analyze heat exchange behavior and plot temperature contours for T-shaped and Y-shaped aluminum fins surrounded by air. The analysis varies the angle between the arms of fins from T-shape to Y-shape under dimensional constraints to compare configurations and validate a new optimization criterion. The modeling is done in Creo and analysis in ANSYS Fluent to optimize fin geometry for maximum heat transfer and minimum pressure drop.
Use of exhaust heat energy of two wheelers to generate power by seebeck effectIRJET Journal
This document summarizes research on using thermoelectric generators to convert waste heat from vehicle exhaust into electricity. It discusses how the Seebeck effect allows direct conversion of temperature differences into electric voltage. Studies have placed thermoelectric modules in contact with exhaust systems to generate power from the temperature difference between hot exhaust gases and coolant. The document reviews several past studies on thermoelectric generator design, materials, and power generation performance in vehicle exhaust systems. It finds that while thermoelectric generators can recover some wasted heat, the potential power is usually just enough to power vehicle accessories rather than significantly improving fuel efficiency. Proper system design is needed to maximize energy recovery from exhaust, cooling, and lubrication waste heat streams.
Analysis of turbocharger performance for jet assisted vertical takeoff and la...Ijrdt Journal
This paper gives a brief analysis on the performance parameters of a Turbocharger, by fabricating a separate combustion chamber and mocking the working of a jet engine. Parameters such as variation of specific heat, dimensionless flow parameters, variation of turbulence, conductivity, thrust developed etc are studied using simulation of the model, and compared with the actual working of the prototype. It can be conveniently proposed from the experiment that turbocharger can be used effectively for developing vertical take-off assist.
IRJET- A Reviw on Different Geometrical Fins and their Effect on Heat Tra...IRJET Journal
This document summarizes research on different geometric fin designs and their effect on heat transfer rates. It discusses how fins are used to increase surface area and improve heat transfer. Various fin geometries are described including longitudinal, radial, and pin fins. The performance of fins is evaluated using metrics like fin effectiveness and efficiency. Higher thermal conductivity materials, thinner fins with closer spacing, and conditions with lower heat transfer coefficients can improve fin performance. The document reviews several studies on topics like annular fins, dimpled pin fins, and modeling transient heat transfer in piston bore fins.
IRJET- Static and Thermal Analysis of Piston with Different Thermal CoatingsIRJET Journal
This document describes a study that performed static and thermal analysis of a piston design with different thermal coating materials. A piston was designed using CATIA software and imported into ANSYS for analysis. Thermal analysis was conducted by selecting aluminum alloy and titanium alloy as piston materials and applying a 1mm coating of either Ni-Cr-Al or Mg-ZrO3. The maximum and minimum heat flux distributions were observed for different piston and coating material combinations. Results were presented graphically to identify the most suitable design combination for withstanding thermal stresses and reducing heat transfer. A literature review discussed previous research on analyzing piston coatings and materials to improve engine performance and efficiency.
IRJET- Thermal Analysis of Muffler Guard for HERO XTREME 200R Bike using FEA ...IRJET Journal
This document summarizes a study that used finite element analysis (FEA) and computational fluid dynamics (CFD) to analyze the thermal performance of a muffler guard for a Hero Xtreme 200R motorcycle. Specifically, it analyzed the temperature distribution and heat transfer of both a basic muffler guard design and a modified design with added holes. The CFD analysis found that temperatures generally increased over time for the basic design but decreased or stabilized for the modified design, indicating improved heat dissipation. The study aimed to predict thermal behavior, compare design performance, and validate CFD results with graphs of temperature over time and location on the muffler guard.
THERMAL ANALYSIS OF AIR FLOW IN A CPU CABINET WITH MOTHERBOARD AND HARD DISK ...IAEME Publication
The present work investigates the numerical simulation of thermal analysis of mixed convection air flow in a CPU Cabinet. The simulation is focused on the non-uniformly heated mother board temperature distribution. In the
present work three cases have been studied, 1) Placing the CPU in vertical position, 2) Placing the CPU in horizontal
position and 3) Providing exhaust fan on top. The work also includes studies of effectiveness of different inlets provided.
The temperature distribution of the components and streamlines were investigated in order to get a clear picture of which case is more effective for cooling of the mother board
Comparison of design and analysis of tube sheet thickness by using uhx code 2IAEME Publication
This document compares the design and analysis of tube sheet thickness using two different standards: the UHX code of ASME and the TEMA standard. It analyzes a fixed tube sheet heat exchanger using both codes and finds the TEMA standard calculates a thicker tube sheet thickness of 75mm compared to 60mm from the UHX code. Finite element analysis is also used and found to produce results close to the exact solution, providing an optimization tool for the tube sheet thickness design. In summary, the document compares tube sheet thickness calculations and stresses using the ASME and TEMA codes and supports the use of finite element analysis to optimize the design.
IRJET- Thermal Behavior of Disc Brake Rotor using Finite Element AnalysisIRJET Journal
The document describes a finite element analysis of the thermal behavior of a disc brake rotor. A 3D model of the rotor was created in SolidWorks and meshed. Thermal and structural analyses were then performed in SolidWorks Simulation. The analysis found that applying a braking torque of 6084.79W led to a maximum temperature of 165°C and maximum thermal stress of 3.098e+007 N/m^2 in the rotor. Ventilation holes in the rotor design help reduce temperatures compared to a solid design. The study provides insights into the thermal distribution and stresses experienced by disc brake rotors during braking.
IRJET- A Review on I. C. Engine Head Fins DesignIRJET Journal
This document summarizes research on improving the design of fins on internal combustion (IC) engine cylinders. It discusses how fins are used to increase heat transfer from the engine cylinder by increasing surface area for convection. The document reviews past research that has analyzed changing fin geometry, thickness, material, and adding holes to fins to improve heat transfer rate. It also presents thermal analysis results showing that aluminum alloy fins provide better heat transfer performance than other materials like cast iron. The goal of the work is to analyze different fin designs and materials to optimize heat dissipation from IC engine cylinders.
IRJET- Heat Transfer Enhancement with Flag Vortex GeneratorIRJET Journal
The document discusses heat transfer enhancement using flag vortex generators. It begins with an abstract that outlines how flexible plates or "flags" inside a duct can successfully enhance heat transfer as a passive technique. However, further investigation is needed to fully understand the thermal characteristics of this approach.
The introduction provides background on different heat transfer enhancement techniques and discusses how flags act as vortex generators to improve heat and mass transfer at a surface. It presents the objectives of the study, which include experimentally investigating heat transfer enhancement and pressure drop using inline and staggered flag arrangements and comparing results to a smooth flat plate.
The literature review summarizes several previous studies. These analyzed the dynamics of flexible flags numerically but noted a lack of experimental validation. They also
This document summarizes the design and analysis of an exhaust manifold expansion joint for a WDP4D diesel locomotive. The existing expansion joint design cracks due to high thermal stresses from exhaust gas temperatures over 600°C. A finite element analysis is performed to investigate fatigue phenomena. The analysis identifies high stresses in gaps in the existing design that reduce heat convection. The design is modified by increasing the bellow width and curvature area to improve heat transfer and reduce stresses. Thermal analysis of the modified design shows von Mises stresses under 150MPa, lower than the material yield strength, indicating the design is safe and cracks will not occur.
Similar to IRJET- Experimental Analysis for Thermal Performance of Muffler Guard Hero Xtreme 200R Bike (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
The CBC machine is a common diagnostic tool used by doctors to measure a patient's red blood cell count, white blood cell count and platelet count. The machine uses a small sample of the patient's blood, which is then placed into special tubes and analyzed. The results of the analysis are then displayed on a screen for the doctor to review. The CBC machine is an important tool for diagnosing various conditions, such as anemia, infection and leukemia. It can also help to monitor a patient's response to treatment.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.